my second favorite shop other than yojimbo's is tati down in hyde park.
once again, weird hours. don't expect him to do any work on your bike though - he works almost exclusively with locals and i mean local-locals, if you're from a different part of town he'll more or less turn down your money. he stocks some really cool **** and puts together some really cool bikes.
most of the other shops are pretty run of the mill. not that they're bad, but yojimbo's and tati have the most character - they're also the most specialized so perhaps that has something to do with it.